Heilongjiang Agricultural Engineering Vocational College

Heilongjiang, China

Heilongjiang Agricultural Engineering Vocational College

Heilongjiang, China
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Zhong C.,Heilongjiang Agricultural Engineering Vocational College
Journal of Chemical and Pharmaceutical Research | Year: 2014

With relative theory about technology of data mining and recommender model of user’s interest, this paper presents the method of MWFP-TREE based on the combination between recommender model idea of user’s weight and the minimum weighted FP-TREE method. Compared to traditional method, this method does not only carry out dimension reduction of raw data to improve the efficiency of a constructing tree but it also performs association rule mining and improves mining effect. This method is applied to mathematics teaching evaluation in one university and it finds out different evaluations from different students respectively considering students’ information and teachers’ information while it is not similar to traditional thought which is only to perform mining direction based on teachers’ information. Towards mining regulations and results, it provides significant referential values for objectivity of teaching evaluation and teaching directions. © 2014, Journal of Chemical and Pharmaceutical Research. All rights received.


He W.,Harbin University of Science and Technology | He W.,Heilongjiang Agricultural Engineering Vocational College | Qiao P.,Harbin University of Science and Technology | Xing L.,Heilongjiang Agricultural Engineering Vocational College
C e Ca | Year: 2017

With the wide application of cloud computing technology, more and more attention has been paid to the security of cloud computing network. As the cloud computing architecture, the network environment and business sharing are becoming increasingly complex, and the traditional protection mechanism based on physical security boundary can no longer be effectively applied in the cloud environment. In the natural ecosystem, the biological individuals themselves, the populations composed of individuals of the same type and the community composed of different populations, will adapt to environmental changes to complete their evolution. This paper proposes a method to simulate the natural ecosystems by integrating different types of network security devices (NSD) in the cloud computing environment based on the principle of bionic technology. It constructs a multidimensional and evolutionary network security model in the cloud computing environment by utilizing the biological autoimmunity, population evolution and multi-population co-evolution. Firstly, this paper constructs the multidimensional network security model, then constructs the overall working mechanism of the model based on different evolutionary rules of the individual layer, the population layer and the community layer, and finally verifies the validity of the model through experiments. Through the design of the individual and global NSDs, the network security problem in the cloud computing environment can be better solved and the scientificity and accuracy of detection can be improved. © 2017 Techna Group Srl & ESMC Co., Ltd.


Lv X.,Harbin Engineering University | Lv X.,Heilongjiang Agricultural Engineering Vocational College | Liang Q.,Harbin Engineering University | Shi D.,Harbin Engineering University | Wang Q.,Harbin Engineering University
Proceedings of the INTER-NOISE 2016 - 45th International Congress and Exposition on Noise Control Engineering: Towards a Quieter Future | Year: 2016

In this paper, the prediction for the hydrodynamic noise of one certain frigate at the speed of 16Kn is made. The hydrodynamic noise is divided into the flow-induced noise and the noise from the flow-induced vibration to study separately. Firstly, the numerical simulation for the flow-induced noise is conducted by the Finite Element Method (FEM) and the Boundary Element Method (BEM), and the flow noise distribution characteristics in steady state are analyzed from the horizontal and vertical direction. Then, the noise from the flow-induced vibration is studied using the Statistical Energy Analysis (SEA). Finally, the complete hydrodynamic noise of the frigate is acquired by the stacking of the two results, which can be used to evaluate whether the design meets the requirements. The study of this paper can provide the reference for the prediction of the hydrodynamic noise and the further noise reduction to a degree. © 2016, German Acoustical Society (DEGA). All rights reserved.


Feng S.,Heilongjiang University | Cao F.,Heilongjiang Agricultural Engineering Vocational College | Lu B.,Harbin Normal University | Cai Q.,Harbin Normal University
Journal of the Chinese Chemical Society | Year: 2014

A magnetically separable catalyst Al2O3-MgO/Fe3O4 was prepared by Al2O3-MgO supported on magnetic oxide Fe3O4 and charactered by FT-IR, XRD and SEM. The mixed oxides afforded high catalytic activity and selectivity for synthesis of 1-phenoxy-2-propanol from phenol and propylene oxide with 80.3% conversion and 88.1% selectivity to 1-phenoxy-2-propanol. Especially, facile separation of the catalyst by a magnet was obtained and the catalytic performance of the recovered catalyst was unaffected even at the forth run. A magnetically separable catalyst Al2O3-MgO/Fe3O4 was prepared by Al2O3-MgO supported on magnetic oxide Fe3O4. The mixed oxides afforded high catalytic activity and selectivity for synthesis of 1-phenoxy-2-propanol from phenol and propylene oxide. The facile separation and reusability of the catalyst was achieved. Copyright © 2014 The Chemical Society Located in Taipei & Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim, Germany.


Song L.-H.,Heilongjiang Agricultural Engineering Vocational College | Kang J.-Y.,Guangdong Industry Technical College
Advanced Materials Research | Year: 2011

In accordance with the latest development direction in the filed of strengthening the heat transfer technology of strengthening the heat transfer on division of strengthening heat transfer by international authoritative Professor A.E. Bergle), including 3D(three-dimensional) heat transfer of ultra-high performance improved in the fins of the design and analysis; 3D heat transfer strengthening of the plowing process mechanism the flexibility ,high speed and high precision of gathered tools and the realization of a 3D digital design and manufacturing. It also researches on the influential law of process parameters on the formation of the fin. It is shown that the whole fin-forming process can be classified into three stages:plowing,heaving and fins forming, and that the front angle,plowing depth and the plowing speed are the main factors influencing the fin forming. Moreover,within a certain range,the height of fin increases with the front angle and the plowing depth. © (2011) Trans Tech Publications.


Sui C.,Northeast Agricultural University | Zhang W.,Northeast Agricultural University | Ye F.,Northeast Agricultural University | Liu X.,Heilongjiang Agricultural Engineering Vocational College | Yu G.,Northeast Agricultural University
Journal of Applied Polymer Science | Year: 2016

Guar gum (GG) was incorporated into soy protein isolate (SPI) films using a blending solution casting method to form SPI/GG composite films. The effects of SPI and GG contents on the transparency, water susceptibility, mechanical, and gas-barrier properties of SPI/GG composite films were analyzed. The results showed that SPI/GG composite films with added GG were much more tensile-resistant, water-resistant, gas-barrier properties but less deformable property than SPI control film. The presence of GG also improved film barrier to the light. The analysis results of contact angle measurement, Fourier transform infrared spectroscopy, and scanning electron microscope indicated that GG induced increased network compactness of the composite films which resulted from strong intermolecular interactions, such as hydrogen bonding, that existed between SPI and GG. Findings indicate that GG may be used as a natural means to improve specific properties of SPI films. © 2016 Wiley Periodicals, Inc.


Lv X.,Harbin Engineering University | Lv X.,Heilongjiang Agricultural Engineering Vocational College | Shi D.,Harbin Engineering University | Wang Q.,Harbin Engineering University | Liang Q.,Harbin Engineering University
Journal of Vibroengineering | Year: 2016

A unified solution for the in-plane vibration analysis of multi-span curved Timoshenko beams with general elastic boundary and coupling conditions by combining with the improved Fourier series method and Rayleigh-Ritz technique is presented in this paper. Under the current framework, regardless of boundary conditions, each of displacements and rotations of the curved Timoshenko beams is represented by the modified Fourier series consisting of a standard Fourier cosine series and several closed-form auxiliary functions introduced to ensure and accelerate the convergence of the series representation. All the expansion coefficients are determined by the Rayleigh-Ritz technique as the generalized coordinates. The convergence and accuracy of the present method are tested and validated by a lot of numerical examples for multi-span curved Timoshenko beams with various boundary restraints and general elastic coupling conditions. In contrast to most existing methods, the current method can be universally applicable to general boundary conditions and elastic coupling conditions without the need of making any change to the solution procedure. © JVE INTERNATIONAL LTD.


Wang W.,Heilongjiang Agricultural Engineering Vocational College | Li N.,Heilongjiang Agricultural Engineering Vocational College
Applied Mechanics and Materials | Year: 2013

By means of the investigation of researching about roadside landscape elements and screening studies, I will study out three aspects, that are: Highway landscape, natural landscape of both sides of the road, the evaluation about the cultural landscape of the highway landscape on both sides of the road, and establishing of the highway landscape evaluation system, developing evaluation criteria, using the AHP to evaluate and analysis highway landscape, so that identify the factors that affect the highway landscape, and try to propose the idea and the measures to construct the highway, to provide a scientific basis to solve the highway ecological landscape restoration and highway landscape design, to coordinate highway traffic and ecological relationship of the landscape, and to promote the coordinated development of highway tourism, resources, environmental protection. © (2013) Trans Tech Publications, Switzerland.


Dai Y.,Heilongjiang Agricultural Engineering Vocational College | Xie H.,Heilongjiang Agricultural Engineering Vocational College | Du C.,Heilongjiang Agricultural Engineering Vocational College
Applied Mechanics and Materials | Year: 2012

Pumpkin is one of the major vegetable crops in cucurbit family. Due to its easy cultivation, high yield, long shelf life and abundant nutriments, pumpkin is very popular in China. In this paper, we study on the germplasm development and innovation of high quality edible pumpkin: Halixiang NO.1. We also discussed the species quality, characteristics and field management. © (2012) Trans Tech Publications, Switzerland.


Wang B.,Heilongjiang Agricultural Engineering Vocational College | Song Q.,Heilongjiang Agricultural Engineering Vocational College | Xu G.,Heilongjiang Agricultural Engineering Vocational College
Applied Mechanics and Materials | Year: 2013

A wind-driven feeding mechanism of high efficiency is designed according to the TRIZ theory and its mechanical structure innovative design based on the principle of energy conversion. It aims at delivering of small granular, cylindrical, flakes and other materials in machinery, pharmaceuticals, electronics and other industries by transmission mechanism such as the typical gear mechanism and linkage mechanism. The prototype is produced combined with the specific parameters of the common materials. The modular innovative design is adopted, including the transmission module, driver module and material feeding module. By the inspection of the actual operation, each design module of the produced prototype is stable and reliable. At the same time the effect of material transportation is good. © (2013) Trans Tech Publications, Switzerland.

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